Brood

1. The young from the same dam, whether produced at the same time or not; young children of the same mother, especially if nearly of the same age; offspring; progeny; as, a woman with a brood of children.
2. To sit on and cover eggs, as a fowl, for the purpose of warming them and hatching the young; or to sit over and cover young, as a hen her chickens, in order to warm and protect them; hence, to sit quietly, as if brooding.
3. Kept for breeding from; as, a brood mare; brood stock; having young; as, a brood sow.
4. Heavy waste in tin and copper ores.
5. Sitting or inclined to sit on eggs.
6. To cherish with care.
7. To think anxiously or moodily upon.
8. To have the mind dwell continuously or moodily on a subject; to think long and anxiously; to be in a state of gloomy, serious thought; -- usually followed by over or on; as, to brood over misfortunes.
9. To sit over, cover, and cherish; as, a hen broods her chickens.
10. That which is bred or produced; breed; species.
11. The young birds hatched at one time; a hatch; as, a brood of chickens.